Polished Ammonite Split Pair - 3.913" Cleoniceras ancienthistory ISBN-13 ‏ : ‎ 978-1681885858

ISBN-13 ‏ : ‎ 978-1681885858

and one to be preserved as a souvenir from the event

the clear winner of the Skyscraper Race of the 1930s

42" in length

They appear in the fossil record 68 million years ago

Polished Ammonite Split Pair - 3.913" Cleoniceras ancienthistory ISBN-13 ‏ : ‎ 978-1681885858Ammonites are an extinct group of cephalopods that entered the fossil record 400 million years ago. This specimen is a 3. 913" polished Cleoniceras fossil from Madagascar. The fossil has been split into a paired set to showcase the beautiful internal chambers of the shell. These internal chambers are called septa and the ammonite could fill them with air in order to float through the ocean like a balloon. After millions of years, they are now